Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z pentamillionaire A person whose wealth amounts to five million dollars (or other currency unit). pentamine The quaternary ammonium compound [(methylimino)diethylene]bis[ethyldimethylammonium] bromide that blocks the activity of ganglions pentamirror A system of three (not five) mirrors used as a cheaper substitute to a pentaprism in the viewfinders of some single-lens reflex cameras pentamolybdate The polymeric anion composed of Mo₅O₁₆²⁻ clusters; any salt containing this anion pentamoraic Having five morae. pentamorph A polymorph that has five forms pentamorphic having five distinct forms pentamorphone 14β-pentylaminomorphinone, a semisynthetic opiate derivative and analgesic. pentamutation A group of five mutations pentanal An alkyl aldehyde with molecular formula C₅H₁₀O, used in flavourings, resin chemistry, and rubber accelerators. pentanaldehyde pentanal pentanary Composed of five components or elements. Used to refer to alloys, semiconductors, or solid chemical compounds. pentander Any plant of the former class Pentandria, having five stamens. pentandrian Of or relating to the class Pentandria; having five stamens. pentandrous Of or relating to the Linnean class Pentandria; having five stamens. pentane An aliphatic hydrocarbon of chemical formula C₅H₁₂; either of the three isomers n-pentane, methylbutane (isopentane), and dimethylpropane (neopentane); volatile liquids under normal conditions. pentanediol Any of several isomeric diols derived from pentane pentanedione Either of two isomeric aliphatic diketones (2,3-pentanedione, 2,4-pentanedione) derived from pentane pentanedithiol Any of many isomeric dithiols derived from pentane, but especially 1,5-pentanedithiol that has several industrial applications pentaneural A mixture of the drugs meprobamate and pentaerithrityl tetranitrate used to manage anxiety disorders pentangle A pentagram. pentangular Having five corners or angles. pentangularity The quality of being pentangular (having 5 angles, corners, or sides). pentangularly In a pentangular manner. pentanidium Any of a class of catalytic bicyclic heterocyclic cations pentanitride Any nitride containing five nitrogen atoms pentanoate Any salt or ester of pentanoic acid. pentanoic Of or pertaining to pentanoic acid or its derivatives pentanol Any of several isomers of the alcohol C₅H₁₁OH; the principal constituents of fusel oil. pentanone Any of three organic compounds containing five carbons and a ketone functional group. pentanoxymethyl An alkoxymethyl radical in which R is a pentyl group pentanoyl A univalent radical derived from pentanoic acid pentanuclear Having five nuclei pentanucleotide A codon containing five nucleotides. pentanucleotidic Relating to or composed of pentanucleotides. pentaoxo A chemical compound with five oxygen atoms with double bonds. pentaoxolane The unstable allotrope of oxygen (O₅) composed of a ring of five atoms pentapalladium Five palladium atoms or ions in a compound (Pd₅). pentapedal Using five legs (in reality, four legs and a tail) in order to walk pentapeptidase Any enzyme that catalyses the hydrolysis of a pentapeptide pentapeptide An oligopeptide formed from five amino acids. pentapeptidic Relating to or composed of pentapeptides. pentapetalous Having five petals. pentaphene A polycyclic aromatic hydrocarbon with five fused benzene rings. pentaphenyl Five phenyl radicals in a molecule pentaphilia love of the number 5 pentaphonic Composed of five notes pentaphosphaferrocene Any of a series of compounds, analogous to ferrocenes, in which a ring of five phosphorus atoms is bound to an iron atom pentaphosphate A compound having five phosphate groups pentaphosphide Any phosphide containing five phosphorus atoms pentaphosphorus five atoms of phosphorus in a compound pentaphosphorylated phosphorylated with five units of phosphoric acid pentaphthong A sequence of five vowels pronounced as, or almost as, a single syllable. pentaphyllon cinquefoil pentaphyllous Having five leaves or leaflets. pentaphyrin A heterocycle that is a pentapyrrolic form of porphyrin pentaplex Having five parts or functions pentaplicate Made five times as much; fivefold pentaploid That has five haploid sets of chromosomes pentaploidy The condition of being pentaploid pentapod An organism or machine with five legs. pentapody A measure, verse, or series consisting of five feet. pentapolis A geographic and/or institutional grouping of five cities pentapolitan Of or relating to the ancient Pentapolis of Cyrenaica in northern Africa pentaporphyrin A complex of five porphyrin groups Pentapotamia a geographical region in South Asia, politically divided between India and Pakistan. Pentapotamian The Punjabi language. pentapotassium Five potassium ions in a compound pentaprism A five-sided prism used in the viewfinder of most single-lens reflex cameras pentaprismatic In the form of a pentaprism. pentapterous Having five wings. pentaptote A noun having five cases. pentaptych A five-part polyptych; a picture, or combination of pictures, consisting of a centrepiece and double folding doors or wings, as for an altarpiece. pentapyrimidine A sequence of five pyrimidines in a nucleic acid pentapyrrolic Composed of five pyrrole rings (rather than the usual four) pentaquadrupole Five quadrupoles (typically in a mass spectrometer) pentaquark Any of a class of subatomic particles (previously hypothetical, since detected, subject to confirmation) consisting of a group of five quarks (compared to three quarks in normal baryons and two in mesons), or more specifically four quarks and one antiquark (symbol Θ). pentaquin An 8-amino-quinoline derivative used to treat malaria. pentaradial Radiating outward in five directions. pentaradiality pentaradial symmetry pentaradially In a pentaradial manner pentaradiate Having five rays. pentarch A member of a pentarchy. pentarchic Relating to a pentarchy or a pentarch pentarchical pentarchic pentarchy Government by five persons. pentarepeat A pattern of five repeats (in a nucleic acid or protein (especially a prion)) pentaresistance The condition of being pentaresistant pentaresistant resistant to five different drugs (typically to antibiotics) pentaribonucleotide An oligoribonucleotide containing five nucleotide units pentarsic Having five stresses on each line of verse pentas Any of the flowering plants of the genus Pentas, especially the Egyptian starcluster, Pentas lanceolata. pentasaccharide Any oligosaccharide having five sugar residues pentasectible Able to be divided into five equal angles using a compass and straightedge. pentaselenide Five selenide ions in a compound (Se₅). pentasepalous Having five sepals. pentasialic Composed of five sialic acid moieties pentasil Any of a family of silicate structures composed of regular three-dimensional pentagonal arrangements of atoms pentasilabenzene A heteroaromatic compound in which five carbon atoms of a benzene ring have been replaced by silicon atoms. pentasilicate Five silicate ions or groups in a compound. pentasiloxane Any siloxane having five -Si-O- groups pentasilver Five silver atoms or ions in a compound (Ag₅). pentasodium Five sodium atoms or ions in a compound pentasomic Having five copies of a particular chromosome. pentasomy The quality of being pentasomic. pentaspan Synonym of pentastarch. pentaspanin A protein associated with integrin pentaspermous Containing or bearing five seeds. pentaspherical Relating to the pentasphere pentastarch A hydroxyethyl starch with five hydroxyethyl groups out of each 11 hydroxyls. pentasternum The third sclerite of a segmented sternal complex. pentastich Any composition consisting of five verses. pentastichous Having, or arranged in, five vertical ranks. pentastome Any tongue worm of the subclass Pentastomida pentastomiasis disease caused by Pentastomida parasites pentastomid Any member of the Pentastomida, an enigmatic group of parasitic invertebrates pentastomidosis Any disease associated with the presence of pentastomids pentastrontium Five strontium atoms or ions in a compound (Sr₅). pentastyle A portico with five columns. pentasubstituted Having five substituents. pentasulfate Any compound containing five sulfate groups or ions pentasulphide any sulphide containing five sulphur atoms in each molecule pentasyllabic Having five syllables. pentasyllabically In five syllables. pentasyllable A pentasyllabic word pentate To perform pentation. pentatelluride Any compound having five telluride ions Pentateuch Synonym of Torah. pentateuchal Of or pertaining to the Pentateuch, also known as the Torah. pentathionate Any salt of pentathionic acid pentathiophene An oligomer of thiophene (containing five units) that is used to image protein aggregates pentathlete An athlete who competes in the pentathlon. pentathlon An ancient athletics discipline, featuring five events: stadion, wrestling, long jump, javelin and discus pentathlos A pentathlete. pentathlum pentathlon pentation The arithmetic operation of repeated tetration. pentational Relating to pentation. pentatomic Having five atoms in each molecule. pentatomid Any shield bug in the family Pentatomidae pentatomine Relating to the pentatomids pentatomoid Any of the superfamily Pentatomoidea of true bugs. pentatomomorph Any insect of the infraorder Pentatomomorpha. pentatomomorphan Of or relating to the Pentatomomorpha. pentatone An augmented sixth pentatonic Based on five tones. pentatonically In a pentatonic manner; using a pentatonic scale pentatonicism The condition of being pentatonic pentatonism pentatonicism pentatope Synonym of pentahedron. pentatriacontane Any of very many isomers of the aliphatic hydrocarbon having thirty-five carbon atoms, but especially n-pentatriacontane CH₃(CH₂)₃₃CH₃